Reduction gearing



. June 21,1927. 7 1,632,989

K. BAUMANN REDUCTION GEARING Filed June 22, 1923 4 Sheets-ShgeLJ KazslB v ITNESS S' INVENTOR ATTORNEY 1,632,989 June 1927 K. BAUMAN'N v x REDUCTION Gamma Filed June 22. 1923 4 Sheets-Sheet O/jnmzss "NY R 7 BY' v 'ATTORNEY June 21 1927. 1,632,989

K. BAUMANN REDUCTION GEARING Filed June 22, 1923 4 Sheets-Sheet ATTORNEY ent N0.'149,329. V

. bearings to dissipate any 1 and 2 and radiating ribs or fins peripheral passage 18 is formed completely around the frame with a partition 19 beneath the central bearing 12 while in the form illustrated by Figs. 6 and 7 the whole frame 10 is hollow and has internal baflies 2O projecting alternately from the top and bottom thereof. In each case ports 21 are provided at opposite ends of the channel formed in the frame so that cooling medium, which may conveniently be lubricating oil for the bearingsliZ can be circulated therethrough to maintain a substantially uniform temperature throughout the frame. In the form illustrated by Figs. 4 and 5 the channel 18 may be so arranged that the walls thereof increase the rigidity of the frame in amanner similar to that described .in the specification of the prior British Letters Pat- In the form illustrated-by Figs. 8 and 9 the bearings 12 are insulated from the frame 10 by channels 15 through which air may circulate asin the form illustrated by Figs.

22 are provided on the parts of the frame adjacent the heat transmitted thereto from the bearings into the atmosphere. Ribs 23 (indicated in dotted lines in Fig. 8 only) may also be provided to con duct into and distribute substantially uniformly throughout the frame any heat re mainingfln the hearings or in the parts of the frame adjacent thereto.

In any fornrof the invention where the bearings 12 are formed independently of the frame 10 they may be insulated from the lat:

ter by being connected therewith through a number of point supports, thereby dispensing with the necessity for interposing heat insulating liners, such as 1st in Figs. 1 to 3, between the frame and the bearings.

A plurality of the aforedescribed arrangements for maintaininga substantially uniform temperature throughout the frame may, Where it is both practicable and desirable, be embodied in a single construction andin any form or arrangement a thermostat or a 'thermal'couple Working in conjunction with an indicating or alarm device,

as for instance the electric circuit with thermal couple and alarm device indicated diagrammatically at 24 in Fig. 1 of the drawings, or a device for measuring differences of expansion may be provided to cause an such means ineffective, or in the event of perature in excess 1 of a predetermined amount arising between different parts of the frame, or in the event of excessive overheating of any partof the frame rendering any distortion taking place in the frame.

Having now particularly described and ascertained the nature of my said invention and in What manner the same is to be performed I declare that what I claim is:

1. In or for power transmission gearing a floating-frame structure comprising a frame and one or more bearings wherein the floating frame isdisposed mainly at one side of the center line of the bearing or bearings and means are provided for maintaining a substantially uniform temperature through out the frame. 1

2. In'or for power transmission gearing, a floating frame structure comprising a frame and one or more bearings wherein the frame 1 is disposedmainly atone side of and is insulated from the bearing or bearings.

3. In or for power transnusslon gearing,

a floating frame structure compr sing a rounding atmosphere any heat transn'iitted thereto from said hearing or bearings.

A floating frame structure as claimed 111. claim 2, wherein the art of the frame adjacent the bearing or earings is provided with means for dissipating into the surrounding atmosphere any heat transmitted KARL BAUMANN.

the'part of the frame thereto from said bearing or bearings, and 

